Isaac J Klostermann, PA-C

Primary specialty

Physician AssistantTaxonomy code 363A00000X

License

PA.0003531 Issued in CO

Practice address

1010 S Rio Grande Ave
Montrose, CO 81401-4831

Phone

(970) 497-3333

Fax

(855) 299-7837

NPI assigned

Oct 5, 2012

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Other identifiers 3

Medicare fee-for-service enrollment

Enrolled in CO

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Physician Assistant

Education

University of Colorado School of Medicine, Denver, 2012

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Peak Family Medicine LLCGroup PAC ID 9931411048, 15 clinicians

Olathe Community Clinic IncGroup PAC ID 5395998744, 23 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Montrose Regional Health Hospital, Montrose, CO, CCN 060006

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Peak Family Medicine LLC

  • Family Medicine Physician
  • Montrose, CO
  • NPI 1578940920
  Medicare reassignment Care Compare group NPD
• Olathe Community Clinic Inc

  • Federally Qualified Health Center (FQHC)
  • Olathe, CO
  • NPI 1770834244
  Medicare reassignment Care Compare group
• Michael D Mignoli, MD

  • Internal Medicine Physician
  • Lonetree, CO
  • NPI 1255394722
  Medicare reassignment
• Peak Family Medicine, PA

  • Nurse Practitioner
  • Apex, NC
  • NPI 1285734319

  Physician Assistant

  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Montrose Memorial Hospital, Inc

  • General Acute Care Hospital
  • Montrose, CO
  • NPI 1205822186
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1349395200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776643200000",
    "number": "1386996080",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 529",
            "city": "OLATHE",
            "state": "CO",
            "postal_code": "814250529",
            "telephone_number": "970-323-6141",
            "fax_number": "855-299-8071"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1010 S RIO GRANDE AVE",
            "city": "MONTROSE",
            "state": "CO",
            "postal_code": "814014831",
            "telephone_number": "970-497-3333",
            "fax_number": "855-299-7837"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1250 Valley View Dr",
            "address_purpose": "LOCATION",
            "city": "Delta",
            "state": "CO",
            "postal_code": "814163138",
            "country_code": "US",
            "telephone_number": "970-874-8981",
            "fax_number": "855-299-7586",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "308 Main Street",
            "address_purpose": "LOCATION",
            "city": "Olathe",
            "state": "CO",
            "postal_code": "81425",
            "country_code": "US",
            "telephone_number": "970-323-6141",
            "fax_number": "855-299-8071",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1550 E. Niagara Road",
            "address_purpose": "LOCATION",
            "city": "Montrose",
            "state": "CO",
            "postal_code": "814015027",
            "country_code": "US",
            "telephone_number": "970-497-4921",
            "fax_number": "855-855-4482",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "KLOSTERMANN",
        "first_name": "ISAAC",
        "middle_name": "J",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2012-10-05",
        "last_updated": "2026-04-20",
        "certification_date": "2026-04-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "CO",
            "license": "PA.0003531",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "63020254",
            "state": "CO"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE B PTAN FOR PEAK FAMILY MEDICINE",
            "identifier": "497750ZPR5",
            "state": "CO"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAILROAD WORKERS MEDICARE FOR PEAK FAMILY MEDICINE",
            "identifier": "P01653177",
            "state": "CO"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Kenneth W Kincaide, MA
• Marietta Estelle King, NP
• Larry Robert Kinnick, O.D.
• Jon A Klippert, D.C.
• Wendy R Kloke, LSW
• Heidi L Knauss, SLP
• David P Koos, PHD
• Elizabeth J Koos, LCSW
• Maria Anna Kotarska, M.D PH.D
• Jed Michael Kovach, MSW LCSW

• Physician Assistant in Montrose, CO
• Providers in Montrose, CO by specialty
• Physician Assistant in Colorado

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 20, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.